Analysis of Organophosphorus Pesticides with
Agilent 682Fifteen of the most common and important organophosphorus
pesticides (OPs) were studied using the Agilent 6820 gas chromatograph
(GC) equipped with the new nitrogen-phosphorus detector (NPD). The 6820 GC-NPD
demonstrated good linearity for concentrations of pesticides range from 1 to 500
ng/mL (R2 >0.999) for most compounds. All OPs produced high signal-to-noise
ratios for splitless injections at 10 ng/mL (ppb) concentrations with the NPD
detector. Instrumental limits of detection for most OPs studied were at low or
sub-ppb concentrations. This suggests the 6820 GC with an NPD is well suited for
OP pesticide residue determinations in foods, water, or other samples.0 Gas
Chromatograph/Nitrogen Phosphorus Detector
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